OTRC: Rihanna cancels Houston concert due to illness

Rihanna has canceled her concert in Houston, Texas, due to an undisclosed illness, Live Nation confirmed on Monday, April 15.

The concert was set to take place on Monday. A statement on the singer's website said, "The Rihanna Diamonds World Tour previously scheduled for this evening in Houston has been postponed it was confirmed today by Live Nation."

"Unfortunately, as a result of illness Rihanna is unable to perform this evening at Houston's Toyota Center," the statement added. "Fans are instructed to retain their tickets to this event pending rescheduled show date information."